Answer:
to describe
Explanation:
Based on the scenario being described within the question it can be said that in this research the Professor is utilizing the goal of to describe. This refers to trying to describe a specific behavior or phenomenon in order to use that description as a basis for learning more about that specific behavior or phenomenon. Which in this scenario would be the children complaining about not getting a turn on the carousel.
He is using the "Labeling" aspect of the categorization part of the perception process.
Labelling is portraying somebody or something in a word or short phrase.[1] For instance, depicting somebody who has infringed upon a law as a criminal. Labelling hypothesis is a hypothesis in human science which credits marking of individuals to control and distinguishing proof of degenerate conduct. It has been contended that labelling is fundamental for communication. However, the utilization of the term is frequently proposed to feature the way that the name is a depiction connected all things considered, as opposed to something characteristic for the named thing.